
- A$4\mu\text{F}$
- B$6\mu\text{F}$
- C$8\mu\text{F}$
- D$10\mu\text{F}$

Explanation:
In the given figure,
Equivalent capcitance between A and B.
Ceg = C1 + C2
$=4μ\text{F}+4μ\text{F}$
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A simple microscope has:
The length of Milky way is
|
(a) 100,000 light years |
(b) 10,000 light years |
(c) 1000 light years |
(d) 100 light years |
The periodic time of rotation of a certain star is 22 days and its radius is 7 × 108 metres. If the wavelength of light emitted by its surface be 4320 Å, the Doppler shift will be (1 day = 86400 sec)
|
(a) 0.033 Å |
(b) 0.33 Å |
(c) 3.3 Å |
(d) 33 Å |
Two condensers of capacities 1μF and 2 μF are connected in series and the system is charged to 120 volts. Then the P.D. on 1 μF capacitor (in volts) will be
|
(a) 40 |
(b) 60 |
(c) 80 |
(d) 120 |